TOCTOU Race Condition in SWUpdate by SBABic
CVE-2025-41259

7.3HIGH

Key Information:

Vendor

Sbabic

Status
Swupdate
Vendor
CVE Published:
3 June 2026

What is CVE-2025-41259?

SWUpdate versions prior to 2026.05 are susceptible to a time-of-check time-of-use (TOCTOU) race condition. This vulnerability permits local unprivileged attackers to escalate their privileges to root level or install untrusted content via a signed update mechanism. By exploiting this flaw, attackers can manipulate the update process to execute malicious scripts, posing severe risks to system integrity and security.

Affected Version(s)

SWUpdate 0 < 2026.05

References

https://github.com/sbaresearch/advisories/tree/public/202...
third-party-advisory
https://github.com/sbabic/swupdate/commit/f4bd64260e233e2...
patch
https://github.com/sbabic/swupdate
product

CVSS V4

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Reinhard Kugler (SBA Research)
.